#Exercise 2.20 from A primer...

eps = 1.0
while 1.0 != 1.0 + eps:
    print('...............', eps)
    eps = eps/2.0
print('final eps:', eps)


"""
Terminal> python machine_zero.py
............... 1.0
............... 0.5
............... 0.25
............... 0.125
............... 0.0625
............... 0.03125
............... 0.015625
............... 0.0078125
............... 0.00390625
............... 0.001953125
............... 0.0009765625
............... 0.00048828125
............... 0.000244140625
............... 0.0001220703125
............... 6.103515625e-05
...
...
............... 3.552713678800501e-15
............... 1.7763568394002505e-15
............... 8.881784197001252e-16
............... 4.440892098500626e-16
............... 2.220446049250313e-16
final eps: 1.1102230246251565e-16
"""